Moderate severityNVD Advisory· Published Mar 24, 2026· Updated Mar 24, 2026
Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)
CVE-2026-33158
Description
Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, a low-privileged authenticated user can read private asset content by calling assets/edit-image with an arbitrary assetId that they are not authorized to view. The endpoint returns image bytes (or a preview redirect) without enforcing a per-asset view authorization check, leading to potential unauthorized disclosure of private files. This issue has been patched in versions 4.17.8 and 5.9.14.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
craftcms/cmsPackagist | >= 4.0.0-RC1, < 4.17.8 | 4.17.8 |
craftcms/cmsPackagist | >= 5.0.0-RC1, < 5.9.14 | 5.9.14 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-3pvf-vxrv-hh9cghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-33158ghsaADVISORY
- github.com/craftcms/cms/commit/7290d91639e5e3a4f7e221dfbef95c9b77331860ghsax_refsource_MISCWEB
- github.com/craftcms/cms/releases/tag/4.17.8ghsax_refsource_MISCWEB
- github.com/craftcms/cms/releases/tag/5.9.14ghsax_refsource_MISCWEB
- github.com/craftcms/cms/security/advisories/GHSA-3pvf-vxrv-hh9cghsax_refsource_CONFIRMWEB
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